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प्रश्न
Out of NaCl and AgCl, which one shows Frenkel defect and why?
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उत्तर
The Frenkel defect is that in which one smaller ion (usually cations) move from its lattice position to an interstitial site i.e. a tetrahedral octahedral hole to form a vacancy in the lattice. Of course, AgCl has the defect because the size of AgCl is intermediate and since the size of Ag+ cation is smaller than chloride ion so it can move to interstitial spaces causing Frenkel to defect while in NaCl (alkali metal halide) they have a larger size of cations which do not fit into voids and so the defect is not shown by the alkali metal halides.
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संबंधित प्रश्न
Give reasons : In stoichiometric defects, NaCl exhibits Schottky defect and not Frenkel defect.
Type of stoichiometric defect shown by ZnS is ____________.
Type of stoichiometric defect shown by AgBr is ____________.
Assertion: Due to Frenkel defect, there is no effect on the density of the crystalline solid.
Reason: In Frenkel defect, no cation or anion leaves the crystal.
Silver halides generally show:
Schottky defect is observed in crystals when ______.
Which of the following defects decrease the density?
(i) Interstitial defect
(ii) Vacancy defect
(iii) Frankel defect
(iv) Schottky defect
If NaCl is doped with 10–4 mole percent of SrCl2 the concentration of cation vacancies will be
Schottky defect is noticed in ______
Which type of ‘defect’ has the presence of cations in the interstitial sites?
